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What is the most common oxidation state in the Lanthanoids ?

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Complete the missing links: In CrO4^(2-) ion, Cr is .......... hybridi...

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  2. Write the general electronic configuration of transition elements.

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  3. What is the most common oxidation state in the Lanthanoids ?

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  4. What happens when 88% of copper, 10% of tin and 2% of zinc combine tog...

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  5. The chromate ion in acidic medium changes to ............. ion.

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  6. The formula of chromite is .............. .

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  7. The most abundant transition metal is ........... .

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  8. The spin only magnetic moment for ion having d^8 electronic configurat...

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  9. When K2Cr2O7 is heated to red hot the products are ......................

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  10. The reddish brown vapours formed when sodium chloride is heated with K...

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  11. The most common mineral containing lanthanoids is ................. .

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  12. In the first transition series, the maximum number of oxidation states...

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  13. What is the theoretical magnetic moment of Ti^(3+) ion ?

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  14. The colour of light absorbed by an aqueous solution of CuSO4 is

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  15. Equivalent weight of K2Cr2O7 in acidic medium is ................ .

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  16. CrO3 is an acidic hydride of ............. .

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  17. Two lanthanoids ............. and ............. show +4 oxidation stat...

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  18. The formula of Prussion blue is ................ .

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  19. The actinoid used for manufacture of fine rods for atomic reactors is ...

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  20. The last element in the actinoid series is :

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